Got the plane back from annual, and the electric trim no longer works.   The switch for electric trim is getting 14V, and when switched 'on' it has 14V  on the downstream side too. (i.e. that switch is working properly) The autopilot self-test fails. The electric trim on the yoke fails to do anything. There is also no additional draw on the electrical system, so I don't suspect it's a problem with the servo. The manual trim wheel works fine. There was some minor wor